The gathered waist and separate trains, which blew in the breeze, gave the gown a classical, timeless vibe — but the psychedelic color gave it an edgy lift.

Thurman is in Cannes for the 20th anniversary celebration of "Pulp Fiction," which won Palme D'Or in 1994. She walked the red carpet with Quentin Tarantino and John Travolta.

The "Pulp Fiction" red carpet reunion, in which Tarantino danced in front of paparazzi, almost upstaged the entrance of the actresses in the Olivier Assayas film, starring Kristen Stewart and Juliette Binoche. Stewart showed up in a glittery sleeveless jumpsuit.